W93.1Contact with or inhalation of liquid air

W93.1 is the ICD-10-CM diagnosis code for contact with or inhalation of liquid air. It belongs to category W93 (exposure to excessive cold of man-made origin), block W85-W99 (exposure to electric current, radiation and extreme ambient air temperature and pressure) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within W93 (exposure to excessive cold of man-made origin), W93.1 is specifically for contact with or inhalation of liquid air. Related codes cover contact with or inhalation of dry ice (W93.0), prolonged exposure in deep freeze unit or refrigerator (W93.2) and exposure to other excessive cold of man-made origin (W93.8).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.